This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 16 |
| 2 | 1136 |
| 3 | 12112 |
| 4 | 74864 |
| 5 | 252016 |
| 6 | 859952 |
| 7 | 1887888 |
| 8 | 4793456 |
| 9 | 8830096 |
| 10 | 17893136 |
| 11 | 28366288 |
| 12 | 56672048 |
| 13 | 77264112 |
| 14 | 134040048 |
| 15 | 190776112 |
| 16 | 306783344 |
| 17 | 386279728 |
| 18 | 626936816 |
| 19 | 752843856 |
| 20 | 1179182864 |
| 21 | 1429131216 |
| 22 | 2014006448 |
| 23 | 2368768912 |
| 24 | 3628646192 |
| 25 | 3937752016 |
| 26 | 5485751952 |